[MlMt] Rules in smart mailboxes

[Bill Cole]

On 13 Jun 2018, at 17:27 (-0400), Arnau Rebassa wrote:

> Hi all,
>
> I have a doubt with rules in smart mailboxes. According to the
> documentation, rules:
>
> “Rules are only triggered when a message is added to a mailbox which 
> most
> often happens when a new message arrives in an account.”
>
> What I understand what an smart mailbox is: they are like a “query 
> result”
> that are executed periodically.

Yes and no. Obviously a query is not being run continuously, but it 
isn't scheduled "periodically" either. It is triggered by the addition 
of messages to or changes to existing messages in any of the subject 
mailboxes.

> If I’m right, when are the rules executed?

When a new message is added to a mailbox, the mailbox rules are 
evaluated against the new message.

> Every time you open the smart mailbox? or when the message arrives to 
> the
> standard mailbox “inbox”?

Neither.
When a new message is seen by MM in any IMAP mailbox (not just INBOX,) 
MM runs the rules associated with the IMAP mailbox against them 
(possibly resulting in the moving of the message to another IMAP 
mailbox) and then the conditions of the Smart Mailboxes which refer to 
the changed IMAP mailbox are evaluated to determine the contents of each 
Smart Mailbox. If that evaluation results in a new message in a Smart 
Mailbox, its rules are run against the new message and then the 
conditions of any Smart Mailboxes which refer to it are evaluated to 
detect any new messages they should include, their rules are run, and so 
on recursively.



-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Currently Seeking Steadier Work: https://linkedin.com/in/billcole